on_loaded javascript not calling other funtions

I have this:
/includes/modules/pages/index/on_load_assign.js
with this:

first_assign();
```and I have this:
/includes/modules/pages/index/jscript_assign.js
with this:

function first_assign() {
alert('assignments called');
}

When I change on_load_assign.js to a simple alert function it works fine, but it doesn't seem to be able to call the outside function.

I lied.

I had other stuff in my jscript_assign.js. It didn't look like it would interfere, and my webmaster toolbar didn't flag any javascript errors on the page, but it must have been doing something.

I took out everything so that it exactly mirrored this post and it worked fine. I'm going to add stuff back in now and hopefully it will work.